BibTex format
@article{Crook:2021:10.1136/bmj.n1648,
author = {Crook, H and Raza, S and Nowell, J and Young, M and Edison, P},
doi = {10.1136/bmj.n1648},
journal = {BMJ},
pages = {1--18},
title = {Long covid-mechanisms, risk factors, and management.},
url = {http://dx.doi.org/10.1136/bmj.n1648},
volume = {374},
year = {2021}
}